WO2019116870A1 - Véhicule et systѐme de commande et procédé de commande associés - Google Patents

Véhicule et systѐme de commande et procédé de commande associés Download PDF

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Publication number
WO2019116870A1
WO2019116870A1 PCT/JP2018/043407 JP2018043407W WO2019116870A1 WO 2019116870 A1 WO2019116870 A1 WO 2019116870A1 JP 2018043407 W JP2018043407 W JP 2018043407W WO 2019116870 A1 WO2019116870 A1 WO 2019116870A1
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WIPO (PCT)
Prior art keywords
control
communication
vehicle
control means
actuator
Prior art date
Application number
PCT/JP2018/043407
Other languages
English (en)
Japanese (ja)
Inventor
拓幸 向井
純 落田
Original Assignee
本田技研工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to JP2019559524A priority Critical patent/JP6992087B2/ja
Priority to CN201880079982.4A priority patent/CN111492419B/zh
Publication of WO2019116870A1 publication Critical patent/WO2019116870A1/fr
Priority to US16/894,352 priority patent/US11148677B2/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/04—Monitoring the functioning of the control system
    • B60W50/045—Monitoring control system parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W60/00—Drive control systems specially adapted for autonomous road vehicles
    • B60W60/005—Handover processes
    • B60W60/0053—Handover processes from vehicle to occupant
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0062—Adapting control system settings
    • B60W2050/007—Switching between manual and automatic parameter input, and vice versa
    • B60W2050/0072—Controller asks driver to take over
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B60W2050/021—Means for detecting failure or malfunction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/04—Monitoring the functioning of the control system
    • B60W50/045—Monitoring control system parameters
    • B60W2050/046—Monitoring control system parameters involving external transmission of data to or from the vehicle, e.g. via telemetry, satellite, Global Positioning System [GPS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
    • B60W2420/403—Image sensing, e.g. optical camera
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
    • B60W2420/408—Radar; Laser, e.g. lidar

Definitions

  • the present invention relates to a vehicle and its control system and control method.
  • Patent Document 1 a monitoring device is provided to monitor whether or not various controls by the automatic operation control device are operating normally.
  • the monitoring device compares the control calculation result of itself with the control calculation result of the automatic driving control device, and forcibly cancels the automatic control function of the automatic driving control device if the two do not match.
  • Patent Document 1 Since the monitoring device of Patent Document 1 does not control automatic operation, the configuration including the monitoring device is not sufficiently redundant. Some aspects of the present invention aim to improve the redundancy of a vehicle performing autonomous driving.
  • a control system of a vehicle having an external world recognition device group and an actuator group, wherein the first travel control means performs first travel control of the vehicle, and second travel control of the vehicle.
  • the first travel control means has a first monitoring unit for monitoring the communication status of the first communication means and the communication status of the second communication means, and the second travel control means communicates with the third communication means.
  • a second monitoring unit that monitors the communication status of the first stage, and the first travel is detected when the first monitoring unit or the second monitoring unit detects the functional deterioration of the vehicle based on the communication status being monitored
  • a control system is provided, characterized in that at least one of the control means and the second travel control means performs alternative control.
  • the redundancy of a vehicle performing automatic driving is improved.
  • the block diagram of the control system for vehicles concerning an embodiment.
  • the block diagram of the control system for vehicles concerning an embodiment.
  • the block diagram of the control system for vehicles concerning an embodiment.
  • the block diagram of the control system for vehicles concerning an embodiment.
  • FIGS. 1 and 2 are block diagrams of a control system 1 for a vehicle according to an embodiment of the present invention.
  • the control system 1 controls a vehicle V.
  • the vehicle V is schematically shown in plan and side views.
  • the vehicle V is a sedan-type four-wheeled vehicle as an example.
  • Control system 1 includes a control device 1A and a control device 1B.
  • FIG. 1 is a block diagram showing the control device 1A
  • FIG. 2 is a block diagram showing the control device 1B.
  • FIG. 3 mainly shows the configuration of communication lines and power supplies between the control device 1A and the control device 1B.
  • the control device 1A and the control device 1B are obtained by multiplexing or redundantly a part of functions implemented by the vehicle V. This can improve the reliability of the system.
  • the control device 1A also performs, for example, driving support control related to danger avoidance and the like in addition to normal operation control in automatic driving control and manual driving.
  • the control device 1B mainly manages driving support control related to danger avoidance and the like. Driving support may be called driving support.
  • the vehicle V of the present embodiment is a parallel type hybrid vehicle, and FIG. 2 schematically shows the configuration of a power plant 50 that outputs a driving force for rotating the drive wheels of the vehicle V.
  • the power plant 50 has an internal combustion engine EG, a motor M and an automatic transmission TM.
  • the motor M can be used as a drive source to accelerate the vehicle V, and can also be used as a generator at the time of deceleration or the like (regenerative braking).
  • Control device 1A includes an ECU group (control unit group) 2A.
  • ECU group 2A includes a plurality of ECUs 20A-29A.
  • Each ECU includes a processor represented by a CPU, a storage device such as a semiconductor memory, an interface with an external device, and the like.
  • the storage device stores programs executed by the processor, data used by the processor for processing, and the like.
  • Each ECU may include a plurality of processors, storage devices, interfaces, and the like.
  • the number of ECUs and functions to be in charge can be appropriately designed, and can be subdivided or integrated as compared with the present embodiment.
  • FIGS. 1 and 3 the names of representative functions of the ECUs 20A to 29A are given.
  • the ECU 20A describes "automatic driving ECU".
  • the ECU 20A executes control related to automatic driving as travel control of the vehicle V.
  • automatic driving at least one of driving of the vehicle V (acceleration of the vehicle V by the power plant 50, etc.), steering or braking is automatically performed regardless of the driver's driving operation. In this embodiment, driving, steering and braking are performed automatically.
  • the ECU 21A is an environment recognition unit that recognizes the traveling environment of the vehicle V based on the detection results of the detection units 31A and 32A that detect the surrounding situation of the vehicle V.
  • the ECU 21A generates target data to be described later as the surrounding environment information.
  • the detection unit 31A is an imaging device (hereinafter sometimes referred to as a camera 31A) that detects an object around the vehicle V by imaging.
  • the camera 31A is provided at the front of the roof of the vehicle V so as to be able to capture the front of the vehicle V. By analyzing the image captured by the camera 31A, it is possible to extract the contour of the target and extract the lane line (white line etc.) on the road.
  • the detection unit 32A is a lidar (Light Detection and Ranging) that detects an object around the vehicle V by light (hereinafter, may be referred to as a lidar 32A). Detect a target or measure the distance to a target.
  • a lidar 32A Light Detection and Ranging
  • Detect a target or measure the distance to a target a target or measure the distance to a target.
  • five lidars 32A are provided, one at each of the front corners of the vehicle V, one at the center of the rear, and one at each side of the rear. The number and arrangement of the riders 32A can be selected as appropriate.
  • the ECU 29A is a driving assistance unit that executes control related to driving assistance (in other words, driving assistance) as traveling control of the vehicle V based on the detection result of the detection unit 31A.
  • the ECU 22A is a steering control unit that controls the electric power steering device 41A.
  • Electric power steering apparatus 41A includes a mechanism that steers the front wheels in accordance with the driver's driving operation (steering operation) on steering wheel ST.
  • the electric power steering device 41A assists the steering operation or performs a motor that exerts a driving force for automatically steering the front wheels, a sensor that detects the amount of rotation of the motor, and a steering torque that the driver bears. It includes a torque sensor to be detected.
  • the ECU 23A is a braking control unit that controls the hydraulic device 42A.
  • the hydraulic device 42A realizes, for example, an ESB (Electric Servo Brake).
  • the driver's braking operation on the brake pedal BP is converted to hydraulic pressure in the brake master cylinder BM and transmitted to the hydraulic device 42A.
  • the hydraulic device 42A is an actuator capable of controlling the hydraulic pressure of the hydraulic oil supplied to the brake devices (for example, the disk brake devices) 51 respectively provided to the four wheels based on the hydraulic pressure transmitted from the brake master cylinder BM.
  • the ECU 23A performs drive control of a solenoid valve and the like included in the hydraulic device 42A.
  • the ECU 23A and the hydraulic device 23A constitute an electric servo brake, and the ECU 23A controls, for example, the distribution of the braking force by the four brake devices 51 and the braking force by the regenerative braking of the motor M.
  • the ECU 24A is a stop maintenance control unit that controls the electric parking lock device 50a provided in the automatic transmission TM.
  • the electric parking lock device 50a is provided with a mechanism that locks the internal mechanism of the automatic transmission TM mainly when the P range (parking range) is selected.
  • the ECU 24A can control locking and unlocking by the electric parking lock device 50a.
  • the ECU 25A is an in-vehicle notification control unit that controls an information output device 43A that notifies information in the vehicle.
  • the information output device 43A includes, for example, a display device such as a head-up display or an audio output device. Further, it may include a vibrating device.
  • the ECU 25A causes the information output device 43A to output, for example, various information such as the vehicle speed and the outside air temperature, and information such as route guidance.
  • the ECU 26A is an outside notification control unit that controls an information output device 44A that notifies information outside the vehicle.
  • the information output device 44A is a direction indicator (hazard lamp), and the ECU 26A performs blinking control of the information output device 44A as a direction indicator to notify the traveling direction of the vehicle V to the outside of the vehicle Also, by performing blinking control of the information output device 44A as a hazard lamp, it is possible to enhance the attention to the vehicle V with respect to the outside of the vehicle.
  • the ECU 27A is a drive control unit that controls the power plant 50.
  • one ECU 27A is assigned to the power plant 50, but one ECU may be assigned to each of the internal combustion engine EG, the motor M, and the automatic transmission TM.
  • the ECU 27A outputs, for example, the output of the internal combustion engine EG or the motor M in response to the driver's drive operation or vehicle speed detected by the operation detection sensor 34a provided on the accelerator pedal AP and the operation detection sensor 34b provided on the brake pedal BP. Control of the automatic transmission TM.
  • the automatic transmission TM is provided with a rotational speed sensor 39 for detecting the rotational speed of the output shaft of the automatic transmission TM as a sensor for detecting the traveling state of the vehicle V.
  • the vehicle speed of the vehicle V can be calculated from the detection result of the rotation speed sensor 39.
  • the ECU 28A is a position recognition unit that recognizes the current position and the course of the vehicle V.
  • the ECU 28A controls the gyro sensor 33A, the GPS sensor 28b, and the communication device 28c, and performs information processing of the detection result or the communication result.
  • the gyro sensor 33A detects the rotational movement of the vehicle V.
  • the course of the vehicle V can be determined based on the detection result of the gyro sensor 33 or the like.
  • the GPS sensor 28b detects the current position of the vehicle V.
  • the communication device 28 c wirelessly communicates with a server that provides map information and traffic information to acquire such information.
  • the database 28a can store map information with high accuracy, and the ECU 28A can specify the position of the vehicle V on the lane with higher accuracy based on the map information and the like.
  • the input device 45A is disposed in the vehicle so as to be operable by the driver, and receives input of instructions and information from the driver.
  • Control device 1B includes an ECU group (control unit group) 2B.
  • the ECU group 2B includes a plurality of ECUs 21B to 25B.
  • Each ECU includes a processor represented by a CPU, a storage device such as a semiconductor memory, an interface with an external device, and the like.
  • the storage device stores programs executed by the processor, data used by the processor for processing, and the like.
  • Each ECU may include a plurality of processors, storage devices, interfaces, and the like. The number of ECUs and functions to be in charge can be appropriately designed, and can be subdivided or integrated as compared with the present embodiment. Similar to the ECU group 2A, names of representative functions of the ECUs 21B to 25B are given in FIG. 2 and FIG.
  • the ECU 21B is an environment recognition unit that recognizes the traveling environment of the vehicle V based on the detection results of the detection units 31B and 32B that detect the surrounding condition of the vehicle V, and also supports traveling as the traveling control of the vehicle V (in other words, driving Support unit that executes control related to the The ECU 21B generates target data to be described later as the surrounding environment information.
  • the ECU 21B is configured to have the environment recognition function and the traveling support function, an ECU may be provided for each function as the ECU 21A and the ECU 29A of the control device 1A. Conversely, in the control device 1A, as in the case of the ECU 21B, the functions of the ECU 21A and the ECU 29A may be realized by one ECU.
  • the detection unit 31B is an imaging device (hereinafter sometimes referred to as a camera 31B) that detects an object around the vehicle V by imaging.
  • the camera 31 ⁇ / b> B is provided on the roof front of the vehicle V so as to be able to capture the front of the vehicle V.
  • the detection unit 32B is a millimeter wave radar that detects an object around the vehicle V by radio waves (hereinafter may be referred to as a radar 32B), and detects a target around the vehicle V And distance measurement with the target.
  • a radar 32B millimeter wave radar that detects an object around the vehicle V by radio waves
  • five radars 32B are provided, one at the center of the front of the vehicle V, one at each of the front corners, and one at each of the rear corners. The number and arrangement of the radars 32B can be selected as appropriate.
  • the ECU 22B is a steering control unit that controls the electric power steering device 41B.
  • Electric power steering apparatus 41B includes a mechanism that steers the front wheels in accordance with the driver's driving operation (steering operation) on steering wheel ST.
  • the electric power steering device 41B assists the steering operation or performs a motor that exerts a driving force for automatically steering the front wheels, a sensor that detects the amount of rotation of the motor, and a steering torque that the driver bears. It includes a torque sensor to be detected.
  • a steering angle sensor 37 is electrically connected to the ECU 22B via a communication line L2, which will be described later, and the electric power steering apparatus 41B can be controlled based on the detection result of the steering angle sensor 37.
  • the ECU 22B can acquire the detection result of the sensor 36 that detects whether the driver is gripping the steering wheel ST, and can monitor the gripping state of the driver.
  • the ECU 23B is a braking control unit that controls the hydraulic device 42B.
  • the hydraulic device 42B implements, for example, VSA (Vehicle Stability Assist).
  • VSA Vehicle Stability Assist
  • the driver's braking operation on the brake pedal BP is converted to hydraulic pressure in the brake master cylinder BM and transmitted to the hydraulic device 42B.
  • the hydraulic device 42B is an actuator capable of controlling the hydraulic pressure of the hydraulic oil supplied to the brake device 51 of each wheel based on the hydraulic pressure transmitted from the brake master cylinder BM, and the ECU 23B is a solenoid valve provided in the hydraulic device 42B. Drive control.
  • the wheel speed sensor 38 provided for each of the four wheels, the yaw rate sensor 33B, and the pressure sensor 35 for detecting the pressure in the brake master cylinder BM are electrically connected to the ECU 23B and the hydraulic device 23B. Based on these detection results, the ABS function, the traction control, and the attitude control function of the vehicle V are realized.
  • the ECU 23B adjusts the braking force of each wheel based on the detection result of the wheel speed sensor 38 provided for each of the four wheels to suppress the sliding of each wheel.
  • the braking force of each wheel is adjusted based on the rotational angular velocity about the vertical axis of the vehicle V detected by the yaw rate sensor 33B, and a rapid change in posture of the vehicle V is suppressed.
  • the ECU 23B also functions as an out-of-vehicle notification control unit that controls an information output device 43B that notifies information outside the vehicle.
  • the information output device 43B is a brake lamp, and the ECU 23B can light the brake lamp at the time of braking or the like. This can increase the attention to the vehicle V with respect to the following vehicle.
  • the ECU 24B is a stop maintenance control unit that controls an electric parking brake device (for example, a drum brake) 52 provided on the rear wheel.
  • the electric parking brake device 52 has a mechanism for locking the rear wheel.
  • the ECU 24B can control the locking and unlocking of the rear wheel by the electric parking brake device 52.
  • the ECU 25B is an in-vehicle notification control unit that controls an information output device 44B that notifies information in the vehicle.
  • the information output device 44B includes a display device disposed on the instrument panel.
  • the ECU 25B can cause the information output device 44B to output various types of information such as vehicle speed and fuel consumption.
  • the input device 45B is disposed in the vehicle so as to be operable by the driver, and receives input of instructions and information from the driver.
  • Control system 1 includes wired communication lines L1 to L7.
  • the ECUs 20A to 27A, 29A of the control device 1A are connected to the communication line L1.
  • the ECU 28A may also be connected to the communication line L1.
  • the ECUs 21B to 25B of the control device 1B are connected to the communication line L2. Further, the ECU 20A of the control device 1A is also connected to the communication line L2.
  • the communication line L3 connects the ECU 20A and the ECU 21A.
  • the communication line L5 connects the ECU 20A, the ECU 21A, and the ECU 28A.
  • the communication line L6 connects the ECU 29A and the ECU 21A.
  • the communication line L7 connects the ECU 29A and the ECU 20A.
  • the protocols of the communication lines L1 to L7 may be the same or different, but may differ depending on the communication environment, such as communication speed, communication amount, and durability.
  • the communication lines L3 and L4 may be Ethernet (registered trademark) in terms of communication speed.
  • the communication lines L1, L2, and L5 to L7 may be CAN.
  • the control device 1A includes a gateway GW.
  • the gateway GW relays the communication line L1 and the communication line L2. Therefore, for example, the ECU 21B can output a control command to the ECU 27A via the communication line L2, the gateway GW, and the communication line L1.
  • the power supply of the control system 1 will be described with reference to FIG.
  • the control system 1 includes a large capacity battery 6, a power supply 7A, and a power supply 7B.
  • the large capacity battery 6 is a battery for driving the motor M and is a battery charged by the motor M.
  • the power supply 7A is a power supply that supplies power to the control device 1A, and includes a power supply circuit 71A and a battery 72A.
  • the power supply circuit 71A is a circuit that supplies the power of the large capacity battery 6 to the control device 1A, and reduces the output voltage (for example, 190 V) of the large capacity battery 6 to a reference voltage (for example, 12 V).
  • the battery 72A is, for example, a 12V lead battery. By providing the battery 72A, power can be supplied to the control device 1A even when the power supply of the large capacity battery 6 or the power supply circuit 71A is interrupted or reduced.
  • the power supply 7B is a power supply that supplies power to the control device 1B, and includes a power supply circuit 71B and a battery 72B.
  • the power supply circuit 71B is a circuit similar to the power supply circuit 71A, and is a circuit that supplies the power of the large capacity battery 6 to the control device 1B.
  • the battery 72B is a battery similar to the battery 72A, for example, a 12V lead battery. By providing the battery 72B, power can be supplied to the control device 1B even when the power supply of the large capacity battery 6 or the power supply circuit 71B is interrupted or reduced.
  • Vehicle V includes control device 1A, control device 1B, external world recognition device group 82 and actuator group 83.
  • the external world recognition device group 82 is a set of external world recognition devices (sensors) mounted on the vehicle V.
  • the external world recognition device group 82 includes the camera 31A, the camera 31B, the rider 32A, and the radar 32B described above.
  • the camera 31A and the rider 32A are connected to the ECU 20A through the ECU 21A.
  • the external world information obtained by the camera 31A and the lidar 32A and the diagnostic information on these devices are supplied to the ECU 20A, and the camera 31A and the lidar 32A operate in accordance with the instruction from the ECU 20A.
  • the camera 31B and the radar 32B are connected to the ECU 21B.
  • the external world information obtained by the camera 31B and the lidar 32B and the diagnostic information regarding these devices are supplied to the ECU 21B, and the camera 31B and the radar 32B operate in accordance with the instruction from the ECU 21B.
  • the ECU 21B may supply the external world information obtained by the camera 31B and the rider 32B to the ECU 20A.
  • the ECU 20A can execute control of automatic driving using the external world information obtained from each of the camera 31A, the camera 31B, the rider 32A and the radar 32B.
  • the actuator group 83 is a set of actuators mounted on the vehicle V.
  • the actuator group 83 includes the electric power steering device 41A, the electric power steering device 41B, the hydraulic device 42A, the hydraulic device 42B, and the power plant 50 described above.
  • the electric power steering device 41A, the hydraulic device 42A and the power plant 50 are connected to the ECU 20A via the ECU 22A, the ECU 23A and the ECU 27A. Instead of this, the ECU 20A may be connected to only a part of the electric power steering device 41A, the hydraulic device 42A, and the power plant 50.
  • Diagnostic information on the electric power steering device 41A, the hydraulic device 42A and the power plant 50 is supplied to the ECU 20A, and the electric power steering device 41A, the hydraulic device 42A and the power plant 50 operate in accordance with the instruction from the ECU 20A.
  • the electric power steering device 41B and the hydraulic device 42B are connected to the ECU 21B via the ECU 22B and the ECU 22B. Instead of this, the ECU 21B may be connected to only a part of the electric power steering device 41B and the hydraulic device 42B. Diagnostic information on the electric power steering device 41B and the hydraulic device 42B is supplied to the ECU 21B, and the electric power steering device 41B and the hydraulic device 42B operate in accordance with an instruction from the ECU 21B.
  • the power plant 50 drives the vehicle V, it is a kind of longitudinal control actuator. Furthermore, since the power plant 50 can change the direction of the vehicle V by changing the distribution of the driving force of the left and right wheels, it is also a kind of lateral control actuator.
  • the hydraulic device 42A and the hydraulic device 42B are types of longitudinal control actuators because they respectively brake the vehicle V. Furthermore, since the hydraulic device 42A and the hydraulic device 42B can each change the direction of the vehicle V by brake torque vectoring, they are also a type of lateral control actuator.
  • Each of the electric power steering device 41A and the electric power steering device 41B controls the steering of the vehicle V, and thus is a type of lateral control actuator.
  • the ECU 20A acquires information from these by communicating with a part of the external world recognition device group 82 (the camera 31A and the lidar 32A) through the communication path, and part of the actuator group 83 through the other communication path (the motorized power steering device 41A. , Hydraulic system 42A, power plant 50).
  • the ECU 21B acquires information from these by communicating with a part of the external world recognition device group 82 (the camera 31B and the radar 32B) through the communication path, and a part of the actuator group 83 through the other communication path (the motorized power steering device 41B , Communicate with the hydraulic device 42B).
  • the communication path connected to the ECU 20A and the communication path connected to the ECU 21B may be different from each other.
  • These communication paths are, for example, CAN (controller area network), but may be Ethernet (registered trademark). Further, the ECU 20A and the ECU 21B are connected to each other through a communication path. This communication path is, for example, CAN (controller area network), but may be Ethernet (registered trademark). Also, they may be connected by both CAN and Ethernet (registered trademark).
  • the ECU 20A includes a high performance processing device 80A and a high reliability processing device 81A.
  • the high performance processing device 80A and the high reliability processing device 81A are each configured by a processor such as a CPU and a memory such as a RAM.
  • the processing performance of the high performance processing device 80A is higher than the processing performance of the high reliability processing device 81A.
  • the performance of the processing device is compared, for example, by the number of clocks and the test result of the benchmark.
  • the reliability of the high reliability processor 81A is higher than the reliability of the high performance processor 80A.
  • the high reliability processor 81A has higher reliability than the high performance processor 80A in the evaluation standard of the failure occurrence rate of the processor.
  • the high performance processing device 80A receives an input (for example, external information and diagnostic information) from the external world recognition device group 82, and based on this input, generates a trajectory to be taken by the vehicle V during automatic driving,
  • the reliability processor 81A is supplied.
  • the high reliability processing device 81A determines the operation amount of each actuator for realizing this trajectory, generates an instruction to the actuator group 83, and supplies it to the ECU that controls each actuator.
  • the high reliability processing device 81A also functions as a monitoring unit that monitors the communication state of the communication path with the external world recognition device group 82 and the communication state of the communication path with the actuator group 83.
  • the communication status includes the result of the self-diagnosis of the device of the connection destination and the situation where communication with the device of the connection destination is not possible.
  • the high reliability processing device 81A can detect the functional deterioration of the vehicle V based on these communication conditions. That is, the high reliability processing device 81A can detect the functional deterioration of the actuator and the external world recognition device connected to the ECU 20A.
  • the high reliability processing device 81A may further monitor the communication status between the ECU 21B and the external world recognition device connected to the ECU 21B. In this case, the high-reliability processing unit 81A can detect the function deterioration related to the external world recognition device connected to the ECU 21B.
  • the high reliability processing device 81A also functions as a control unit that performs alternative control during automatic operation.
  • Alternative control is control that is performed when it is determined that switching from automatic operation to manual operation is necessary, and is control that substitutes control for normal automatic operation.
  • the high reliability processing device 81A is connected to an actuator (electric power steering device 41A) connected to itself based on the information (the detection information of these sensors) acquired by the ECU 20A from the camera 31A and the lidar 32A.
  • the travel of the vehicle V is controlled using the hydraulic device 42A and the power plant 50).
  • the high reliability processing device 81A performs notification to request the driver of the vehicle V to switch to the manual driving while maintaining the automatic driving travelling.
  • the high reliability processing device 81A decelerates the vehicle V and searches for a position at which the vehicle V can be stopped.
  • the high reliability processing device 81A stops the vehicle V when it can find the stoppable position, and makes the vehicle V travel at a very low speed (for example, creep speed) when it can not find the stoppable position. Find a position that can be stopped. Thereafter, the high reliability processing device 81A determines the stop of the vehicle V from the detection result of the rotation speed sensor 39, and maintains the stop of the vehicle V when it is determined that the vehicle V has stopped.
  • the high reliability processing device 81A is information acquired by the ECU 20A from the camera 31A and the rider 32A, and information acquired by the ECU 21B from the radar 32B. Alternative control may be performed based on Thus, by further utilizing the information from the radar 32B, the accuracy of alternative control is improved. Further, the high reliability processing device 81A may not use the information from the camera 31B. Since the high reliability processing device 81A has information from the camera 31A, most of the information from the camera 31B overlaps. By not using such redundant information, the amount of communication data can be reduced.
  • the ECU 21B also includes a high performance processing device 80B and a high reliability processing device 81B.
  • the processing performance of the high performance processing device 80B is higher than the processing performance of the high reliability processing device 81B.
  • the reliability of the high reliability processor 81B is higher than the reliability of the high performance processor 80B.
  • the high-reliability processor 81B may, for example, satisfy ASIL D, and the high-performance processor 80B may, for example, satisfy ASIL B.
  • the high performance processing device 80B receives an input (for example, external world information and diagnostic information) from the external world recognition device group 82, determines the support content of the traveling of the vehicle V during the manual driving based on this input, and makes the content high.
  • the reliability processing device 81B is supplied.
  • the high reliability processing device 81B determines the operation amount of each actuator for realizing the support, generates an instruction to the actuator group 83, and supplies it to the ECU that controls each actuator.
  • the high reliability processing device 81 B also functions as a monitoring unit that monitors the communication state of the communication path with the external world recognition device group 82 and the communication state of the communication path with the actuator group 83.
  • the high reliability processing device 81B can detect the functional deterioration regarding the vehicle V based on these communication conditions. That is, the high reliability processing device 81B can detect the functional deterioration regarding the actuator and the external world recognition device connected to the ECU 21B.
  • the high reliability processing device 81B also functions as a control unit that performs alternative control during automatic operation.
  • the high reliability processor 81B is connected to an actuator (electric power steering device 41B) connected to itself based on the information (the detection information of these sensors) acquired by the ECU 21B from the camera 31B and the radar 32B.
  • the travel of the vehicle V is controlled using the hydraulic device 42B).
  • both the high reliability processing device 81A of the ECU 20A and the high reliability processing device 81B of the ECU 21B function as a control unit that performs substitution control with the monitoring unit. Therefore, high redundancy is realized.
  • Example of control> The control method of the vehicle V by ECU20A and ECU21B in automatic driving
  • the functional deterioration related to the vehicle V is detected based on the communication status being monitored by the high reliability processing device 81A of the ECU 20A.
  • the high-reliability processing unit 81A notifies the high-reliability processing unit 81B that the functional deterioration related to the vehicle V has been detected.
  • the high reliability processing device 81B performs alternative control of the vehicle V.
  • the traveling of the vehicle V is controlled using the actuators connected to the ECU 21B, that is, the electric power steering device 41B and the hydraulic device 42B. It is possible to control the vehicle V more safely by performing the alternative control without using the actuator in which the functional deterioration is detected.
  • the high reliability processing unit 81B notifies the high-reliability processing unit 81A that the functional deterioration related to the vehicle V has been detected.
  • the high reliability processing device 81A performs alternative control of the vehicle V.
  • the traveling of the vehicle V is controlled using the actuators connected to the ECU 20A, that is, the electric power steering device 41A, the hydraulic device 42A and the power plant 50. It is possible to control the vehicle V more safely by performing the alternative control without using the actuator in which the functional deterioration is detected.
  • the ECU 21B may monitor the input information input to the ECU 20A and the output information output from the ECU 20A during execution of the alternative control by the ECU 20A.
  • the input information is, for example, information on the state of the vehicle V, external information, and the like.
  • the output information is, for example, an action plan, a command value to an actuator, or the like.
  • the ECU 21B may suppress the execution of the alternative control by the ECU 20A based on the input information and the output information. For example, the ECU 21B compares the currently output information with the past output information for the same input information. The ECU 21B may determine that the substitute control is not functioning properly when the output information is largely different, and may terminate the substitute control by the ECU 20A.
  • the ECU 20A monitors the input information input to the ECU 21B and the output information output from the ECU 21B during execution of the alternative control by the ECU 21B, and based on these input information and output information, the alternative by the ECU 21B The execution of control may be suppressed.
  • the automatic driving control executed by the ECU 20A in the automatic driving state one that automates all of driving, braking and steering has been described, but the automatic driving control is driven without depending on the driver's driving operation, It is sufficient to control at least one of braking and steering.
  • the control without depending on the driver's driving operation can include controlling without the driver's input to the steering wheel, the operator represented by the pedal, or driving the driver's vehicle It can be said that the intention is not required. Therefore, in the automatic driving control, the driver may be obliged to monitor the surroundings, and at least one of driving, braking, or steering of the vehicle V may be controlled according to the surrounding environment information of the vehicle V.
  • driver may be in a state in which the driver is obligated to monitor the surroundings and at least one of driving or braking of the vehicle V and steering is controlled according to the surrounding environment information of the vehicle V. It is also possible to control all of driving, braking, and steering of the vehicle V in accordance with the surrounding environment information of V. Further, it may be possible to make a transition to each of these control steps.
  • a sensor for detecting driver's status information biometric information such as heart rate, expression of the eye status and pupil status information
  • automatic driving control is executed or suppressed according to the detection result of the sensor. It may be.
  • the driving support control (or the driving support control) executed by the ECU 29A and the ECU 21B may control at least one of driving, braking, and steering during the driving operation of the driver.
  • the driver's driving operation can be said to be when there is a driver's input to the operating element or when the driver's contact with the operating element can be confirmed and the driver's intention to drive the vehicle can be read.
  • the driving support control can include both that is executed by the driver selecting the activation via a switch operation or the like, and that the driver executes without selecting the activation. Examples of the former driver's selection of activation include front vehicle following control, lane keeping control, and the like. These can also be defined as part of automatic operation control. As the latter one that the driver performs without selecting activation, collision reduction brake control, lane departure suppression control, erroneous start suppression control, and the like can be mentioned.
  • the second traveling control means has a second monitoring unit (81B) that monitors the communication state of the third communication means and the communication state of the fourth communication means. At least one of the first traveling control means and the second traveling control means when the functional deterioration of the vehicle is detected based on the communication status being monitored by the first monitoring unit or the second monitoring unit.
  • a control system characterized by performing an alternative control. According to this configuration, since both the first traveling control means and the second traveling control means can detect the functional deterioration of the vehicle and can perform the alternative control, the redundancy of the vehicle is improved.
  • the second travel control means performs substitution control when the first monitoring unit detects a functional decrease related to the vehicle based on the communication status being monitored.
  • the alternative control can be performed more safely by performing the alternative control with the travel control means different from the travel control means that has detected the functional deterioration.
  • the first travel control means when the third communication means is normal, information obtained by the first travel control means from the external world recognition device group through the first communication means, and the second travel control means The control system according to Configuration 2, wherein the substitute control is performed based on the information acquired from the external world recognition device group through the third communication means.
  • stable alternative control can be implemented by continuously using the external world recognition device that can be utilized when performing alternative control.
  • the external world recognition device group includes a first camera, a second camera, a lidar, and a radar.
  • the first travel control means acquires information from the first camera and the rider through the first communication means
  • the second travel control means acquires information from the second camera and the radar through the third communication means
  • the first traveling control means when the third communication means is normal, the information acquired by the first traveling control means from the first camera and the rider through the first communication means, and the second traveling.
  • the control system according to Configuration 3, wherein the control means performs the alternative control based on the information acquired from the front radar through the third communication means, and does not use the information from the second camera.
  • the actuator group includes a first longitudinal control actuator (42A, 50), a second longitudinal control actuator (42B), a first lateral control actuator (41A, 42A, 50), and a second lateral control actuator (41B, 42B).
  • the first travel control means is connected to at least one of the first longitudinal control actuator and the first lateral control actuator.
  • the control system according to any one of configurations 1 to 5, wherein the second traveling control means is connected to at least one of the second longitudinal control actuator and the second lateral control actuator. .
  • the alternative control can be executed by the actuator connected to the other travel control means.
  • the first traveling control means includes a first processing device (80A) receiving an input from the external world recognition device group, and a second processing device (81A) generating an instruction to the actuator group.
  • the second travel control means includes a third processing device (80B) receiving an input from the external world recognition device group, and a fourth processing device (81B) generating an instruction to the actuator group.
  • the first monitoring unit is included in the second processing device,
  • the control system according to any one of the configurations 1 to 6, wherein the second monitoring unit is included in the fourth processing device. According to this configuration, it is possible to detect the functional deterioration in the processing device that generates the support to the actuator group.
  • the first monitoring unit notifies the second travel control unit that the functional deterioration related to the vehicle has been detected.
  • the control system according to any one of configurations 1 to 7, wherein the second monitoring unit notifies the first travel control unit that the functional deterioration related to the vehicle has been detected.
  • the control system outputs input information input to the traveling control means which is executing the alternative control during execution of the alternative control by the first traveling control means or the second traveling control means, and is outputted from the traveling control means And a third monitoring unit that monitors the output information.
  • the third monitoring unit suppresses execution of the alternative control by the first traveling control unit or the second traveling control unit based on the input information and the output information.
  • the control system according to item 1. According to this configuration, by monitoring the input and output of the alternative control, it is possible to prevent the vehicle behavior from becoming unstable due to the function decrease of the alternative control.
  • At least one of the first driving control means and the second driving control means requests the driver of the vehicle to change driving before performing the alternative control, and the driving change is not performed.
  • the control system according to any one of configurations 1 to 9, wherein alternative control is performed, and the vehicle is stopped in the alternative control. According to this configuration, the vehicle can be shifted to a safe state.
  • a control method of a vehicle having an external world recognition device group (82) and an actuator group (83),
  • the vehicle is First travel control means (20A) for performing first travel control of the vehicle; Second travel control means (21B) for performing second travel control of the vehicle; First communication means for the first traveling control means to communicate with the external world recognition device group; Second communication means for the first traveling control means to communicate with the actuator group; Third communication means for the second travel control means to communicate with the external world recognition device group; Fourth communication means for the second travel control means to communicate with the actuator group; Equipped with The control method is A first monitoring unit (81A) included in the first traveling control means monitoring the communication state of the first communication means and the communication state of the second communication means; A second monitoring unit (81B) included in the second travel control means monitoring the communication state of the third communication means and the communication state of the fourth communication means; At least one of the first traveling control means and the second traveling control means when the functional deterioration of the vehicle is detected based on the communication status being monitored by the first monitoring unit or the second

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  • Human Computer Interaction (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

L'invention concerne un système de commande pour un véhicule qui comprend un groupe de dispositifs de reconnaissance d'environnement externe et un groupe d'actionneurs, le système de commande comprenant : une première unité de commande de déplacement qui effectue une première commande de déplacement du véhicule ; une seconde unité de commande de déplacement qui effectue une seconde commande de déplacement du véhicule ; une première unité de communication à l'aide de laquelle la première unité de commande de déplacement réalise une communication avec le groupe de dispositifs de reconnaissance d'environnement externe ; une deuxième unité de communication à l'aide de laquelle la première unité de commande de déplacement effectue une communication avec le groupe d'actionneurs ; une troisième unité de communication à l'aide de laquelle la seconde unité de commande de déplacement effectue une communication avec le groupe de dispositifs de reconnaissance d'environnement externe ; et une quatrième unité de communication à l'aide de laquelle la seconde unité de commande de déplacement réalise une communication avec le groupe d'actionneurs. La première unité de commande de déplacement comprend une première unité de surveillance qui surveille un état de communication de la première unité de communication et un état de communication de la deuxième unité de communication. La seconde unité de commande de déplacement comprend une seconde unité de surveillance qui surveille un état de communication de la troisième unité de communication et un état de communication de la quatrième unité de communication. Dans les cas où la première unité de surveillance ou la seconde unité de surveillance détecte un déclin de la fonction du véhicule sur la base de l'état de communication surveillé, la première unité de commande de déplacement et/ou la seconde unité de commande de déplacement effectuent une commande alternée.
PCT/JP2018/043407 2017-12-13 2018-11-26 Véhicule et systѐme de commande et procédé de commande associés WO2019116870A1 (fr)

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